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January 2nd, 2017, 04:44 AM   #1
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relative displacement

ship k is 3000m to the west of ship h. ship k is travelling with velocity 12i+6j m/s. what is the minimum speed which h must travel to intercept k.
i know there j components must be equal if they are to colide so h must be ai+6j dont know what to do from here
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January 2nd, 2017, 07:29 AM   #2
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$v_h = ai + 6j$ m/s

$a = 0$ for the speed of ship h to be a minimum ... why?
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January 2nd, 2017, 01:01 PM   #3
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as when you find out the velocity of it its the loewest at 0 root(o^2+6^2) =6
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January 3rd, 2017, 01:35 PM   #4
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the second part of the question is if in fact the speed of h is 10 m/s find the 2 directions in which h may steer in order to intercept k

i get 36.86 north of east but i dont get how there is 2 directions
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January 3rd, 2017, 02:55 PM   #5
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Quote:
Originally Posted by markosheehan View Post
the second part of the question is if in fact the speed of h is 10 m/s find the 2 directions in which h may steer in order to intercept k

i get 36.86 north of east but i dont get how there is 2 directions
north of west, also?
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